Recipe Tips

Preparation

Crumb Topping

Whisk flour, sugar, and salt in a medium bowl. Stir in nuts. Add butter; using your fingertips, work butter into dry ingredients until large, moist crumbs begin to form. Set topping aside. DO AHEAD: Can be made 5 days ahead. Cover and chill.

Cake

Using an electric mixer on medium speed, beat 3/4 cup sugar and butter in a medium bowl until light and fluffy, 3–4 minutes. Beat in vanilla. Add eggs one at a time, beating to blend between additions and occasionally scraping down sides of bowl, until mixture is pale and fluffy, 3–4 minutes longer.

Toss blueberries with panko in a small bowl; scatter evenly over batter. Sprinkle crumb topping over blueberries.

Bake cake until top is golden brown and a tester inserted into the center comes out clean, 55–65 minutes. Let cool completely in pan. DO AHEAD: Can be made 1 day ahead. Store airtight at room temperature.